This document contains a short howto for powering up a SoM with a SoM-100ES
carrier and seeing some results.
To perform this quick-start you will need the following components
SoM Module (SoM-400M, SoM-5282M, or SoM-400EM)
SoM-100ES Carrier
Power Supply (wall mount or PC)
10 Jumpers (supplied with SoM-100ES)
DB9 serial port cable (for terminal connection)
CAT5 cable (for network connection)
For this
simple example, we connect the SoM module, a serial port terminal, ethernet,
and power.
Insert the SoM into the SODIMM
socket of the SoM-100ES.
The module should fit snugly into the socket, and snap down with a
click, locking the two side tabs in place
Step 2. Serial Port Connection
Connect a serial port to COM1. This
should use a standard serial
Cable (not a null modem cable). For communication with normal
serial
Terminals the DTR_RESET jumper (located behind and slightly to the
right of
COM1) should be set to “OFF”. The other end of the terminal should
be connected to a PC or ASCII terminal for initial bring up of the board.
A network connection may be
established by connecting the carriers Ethernet
Jack to a standard 10/100 base-T network. If the jack is connected
directly to a PC a crossover cable should be used. If the board is connected to
a router or switch, standard CAT5 should be used.
Power can
be applied to the SoM system using either the wall mount connector or standard
PC power supply jack.
Depending on the desired
configuration, the power supply jumper (JP3) must be set appropriately.
JP3 has to settings, which are labeled on the silkscreen as 5V and
reg.
If 5V is selected, the board will be powered directly from the
voltage applied across the standard 5V and GND terminals of the PC connector.
From a power management standpoint, this is the most efficient way of powering
the board.
If REG is selected, the boards power comes in through the 12V
supply line of the PC connector, or over the Wall Mount connector (9V) this
supply is then regulated down to 5V. This method of powering the board is less
efficient but allows the use of smaller, cheaper power supplies.
Unless
your network provides DHCP service and you have some way of dynamically
locating the board on the network, you will need to establish a serial
connection to initially establish communications with the board.
For
this any terminal program can be used (Hyperterminal is the most common for
Windows).
The
following settings should be used for connection:
BAUD
115200
BITS 8
PARITY
none
Line
feeds - off
Apply power to the board (turn on the PC power supply or plug in
the wall mount unit).
At this point the OS will load and you should see data scrolling
past as it boots.
All SoM boards will then display a login prompt from which a
terminal session may be entered if you know the password.
Device |
Login |
Password |
SoM-400M |
root |
tini |
SoM-5282M |
root |
emac_inc |
|
|
|